Improvement of Strength of Lotus-Type Porous Aluminum through ECAE Process

Tae Bum Kim; Masakazu Tane; Shinsuke Suzuki; Takuya Ide; Hiroshi Utsunomiya; Hideo Nakajima

doi:10.4028/www.scientific.net/MSF.695.263

Paper Titles

Evaluation of Crack Sensitivity and Gap Bridging Ability during Laser Butt Welding of Aluminum 5J32 and 6K21 Alloys
p.247

Preparation and Hydrogen Permeation on Al₂O₃-CuO-ZnO (ACZ)/Co Membrane by Hot Press Sintering (HPS)
p.251

Fabrications and Evaluations of Hydrogen Permeation on Al₂O₃-CuO-ZnO(ACZ)/Pd Coated Membrane
p.255

Fabrications and Evaluations of Hydrogen Capacities on MgH_X-Transition Metal Oxide(TMO) Composites by Mechanical Alloying
p.259

Improvement of Strength of Lotus-Type Porous Aluminum through ECAE Process
p.263

Influence of Raw Materials on the Preparation of Terracotta Panel
p.267

Influence of Volume Fraction of Bainite on Mechanical Properties of X80 Pipeline Steel with Excellent Deformability
p.271

Mechanical Behaviors and Texture Development of the Extruded Magnesium AZ31 Alloys
p.275

Pigment Printing of Natural Dye from Red Mangrove Bark on Silk Fabrics
p.279

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Improvement of Strength of Lotus-Type Porous Aluminum through ECAE Process

Abstract:

Lotus-type porous aluminum with cylindrical pores oriented in one direction was deformed by Equal Channel Angular Extrusion (ECAE) through a 150° die with sequential 180° rotations, and the pore morphology and Vickers hardness after the extrusion were investigated. The Vickers hardness increases with increasing number of passes in the extrusions both parallel and perpendicular to the pore direction, accompanied by the decrease of porosity. The densification occurs more easily in the perpendicular extrusions than in the parallel extrusions, and the large deformation by the densification gives rise to the large increase in the Vickers hardness for the perpendicular extrusions.